Properties of Pumice lan Picrite
ukuran gandum
grained nggoleki
grained nggoleki
tilas
putih, greenish putih utawa abu-abu
putih, greenish putih utawa abu-abu
porosity
Highly keropos
kurang keropos
luster
earthy
subvitreous kanggo kurang
tartamtu gravitasi
2.86
2.75-2.92
Kapadhetan
0.25-0.3 g / cm 3
1.5-2.5 g / cm 3
resistance
impact tahan, meksa tahan
tahan panas